Two busy Downriver ramps to southbound Interstate 75 closed Monday, and a northbound ramp will close at 9 a.m. Wednesday as part of the rebuilding project for the Rouge River bridge and other spans.

The Monday closures are the Northline/Allen ramp and the Eureka ramp, according to the Michigan Department of Transportation. Come Wednesday, the Eureka ramp will also close to northbound I-75 traffic.

“All the people who haven’t been able to get on in Detroit or Melvindale, now we’re moving them further south,” said Diane Cross, spokeswoman for MDOT. “It’s going to cause more problems.”

The work has prompted some commuters to start exploring ways to deal with the closures.

“here we go... Fort st all the way in for me,” one user wrote on Facebook.

Another posted: “Idk what I am going ...to do yet. Telegraph or maybe 94 to 275? Ill see what GPS says after work. At least my drive to work is still OK.”

The ramps are scheduled to be closed through Oct. 10, according to the MDOT website.

Motorists are advised to use the Telegraph (US-24) connector to access southbound I-75.

While the ramp closures are in place, Northline and Eureka roads each will have only one lane open beneath I-75, MDOT said. Allen also will have a single lane open.

On Wednesday, one lane of northbound I-75 will close from Sibley to Goddard.

Meanwhile, the southbound I-75 service drive is closed between Livernois and Green through March 4, according to the department.

The southbound off ramp to Livernois remains closed through fall.

The closures are part of a $220 million project that involves rebuilding the Rouge River bridge concrete and repairing or replacing 13 other bridges. About eight miles of southbound I-75, from Springwells in Detroit to Northline in Southgate, have been closed since February 2017, forcing detours that have sometimes doubled commutes for drivers.

“If drivers don’t get on down at Sibley, now they cannot get back on until they are in Lincoln Park at Dix,” Cross said.

MDOT has said that the project is on track for completion by the end of 2018. The aging Rouge bridge was constructed in 1967, MDOT said.